two raise posix.error if symlinks aren't supported).

Improved setwincursor() to allow None to explicitly turn the cursor off.

Forget about the temp file.

Count lines in Python.

except get*str*arg --> get*Str*arg; get*str*arg fetches a C string.

guided by a format string, makes all get*arg() functions unnecessary.

Use getargs() function.
Drop re_string from re object.